Overview

It exposes a ready-made API client class which manages the process of constructing requests to the Turnkey API and authenticating them with a valid API key. Furthermore, it exposes API proxies that forward requests from your application’s client that need to be signed by parent organizations API key.

Use the @turnkey/sdk-server package to handle server-side interactions for applications that interact with the Turnkey API.

Installation

npm install @turnkey/sdk-server

Initializing

import { Turnkey } from "@turnkey/sdk-server";

const turnkey = new Turnkey({
  defaultOrganizationId: process.env.TURNKEY_ORGANIZATION_ID,
  apiBaseUrl: "https://api.turnkey.com",
  apiPrivateKey: process.env.TURNKEY_API_PRIVATE_KEY,
  apiPublicKey: process.env.TURNKEY_API_PUBLIC_KEY,
});

Parameters

config
TurnkeySDKServerConfig
required

An object containing configuration settings for the Server Client.

defaultOrganizationId
string
required

The root organization that requests will be made from unless otherwise specified

apiBaseUrl
string
required

The base URL that API requests will be sent to (use https://api.turnkey.com when making requests to Turnkey’s API)

apiPrivateKey
string

The API Private Key to sign requests with (this will normally be the API Private Key to your root organization)

apiPublicKey
string

The API Public Key associated with the configured API Private Key above

Creating Clients

Calls to Turnkey’s API must be signed with a valid credential (often referred to in the docs as stamping) from the user initiating the API call. When using the Server SDK, the user initiating the API call is normally your root organization, and the API call is authenticated with the API keypair you create on the Turnkey dashboard.

apiClient()

The apiClient method returns an instance of the TurnkeyApiClient which will sign requests with the injected apiPrivateKey, and apiPublicKey credentials.

const apiClient = turnkey.apiClient();
const walletsResponse = await apiClient.getWallets();

// this will sign the request with the configured api credentials

Creating API Proxies

There are certain actions that are initiated by users, but require the activity to be signed by the root organization itself. Examples of this include the initial creation of the user subOrganization or sending an email to a user with a login credential as part of an emailAuth flow.

These can be implemented in your backend by creating an apiClient and handling requests from your browser application at different routes, but we have also provided a convenience method for doing this by having allowing a single apiProxy to handle requests at a single route and automatically sign specific user actions with the root organization’s credentials.

expressProxyHandler()

The expressProxyHandler() method creates a proxy handler designed as a middleware for Express applications. It provides an API endpoint that forwards requests to the Turnkey API server.

const turnkeyProxyHandler = turnkey.expressProxyHandler({
  allowedMethods: ["createSubOrganization", "emailAuth", "getSubOrgIds"],
});

app.post("/apiProxy", turnkeyProxyHandler);

// this will sign requests made with the client-side `serverSign` function with the root organization's API key for the allowedMethods in the config

2. nextProxyHandler()

The nextProxyHandler() method creates a proxy handler designed as a middleware for Next.js applications. It provides an API endpoint that forwards requests to the Turnkey API server.

// Configure the Next.js handler with allowed methods
const turnkeyProxyHandler = turnkey.nextProxyHandler({
  allowedMethods: ["createSubOrganization", "emailAuth", "getSubOrgIds"],
});

export default turnkeyProxyHandler;

// this will sign requests made with the client-side `serverSign` function with the root organization's API key for the allowedMethods in the config

TurnkeyServerClient

The @turnkey/sdk-server exposes NextJS Server Actions. These server actions can be used to facilitate implementing common authentication flows.

sendOtp()

Initiate an OTP authentication flow for either an EMAIL or SMS.

import { server } from "@turnkey/sdk-server";

const initAuthResponse = await server.sendOtp({
  suborgID: suborgId!,
  otpType,
  contact: value,
  ...(emailCustomization && { emailCustomization }),
  ...(sendFromEmailAddress && { sendFromEmailAddress }),
  ...(customSmsMessage && { customSmsMessage }),
  userIdentifier: authIframeClient?.iframePublicKey!,
});

if (initAuthResponse && initAuthResponse.otpId) {
  // proceed to verifyOtp
} else {
  // error handling
}

Parameters

request
SendOtpRequest
required

An object containing the parameters to initiate an EMAIL or SMS OTP authentication flow.

suborgID
string
required

The ID of the sub organization for the given request.

otpType
string
required

The type of OTP request, either EMAIL or SMS.

contact
string
required

The contact information (email or phone number) where the OTP will be sent.

customSmsMessage
string

Use to customize the SMS message.

userIdentifier
string

IP Address, iframePublicKey, or other unique identifier used for rate limiting.

verifyOtp()

Verify the OTP Code sent to the user via EMAIL or SMS. If verification is successful, a Session is returned which is used to log in with.

import { server } from "@turnkey/sdk-server";

const authSession = await server.verifyOtp({
  suborgID: suborgId,
  otpId,
  otpCode: otp,
  targetPublicKey: authIframeClient!.iframePublicKey!,
  sessionLengthSeconds,
});

if (authSession?.token) {
  // log in with Session
  await authIframeClient!.loginWithSession(authSession);
  // call onValidateSuccess callback
  await onValidateSuccess();
} else {
  // error handling
}

Parameters

request
VerifyOtpRequest
required

An object containing the parameters to verify an OTP authentication attempt.

suborgID
string
required

The ID of the sub organization for the given request.

otpId
string
required

The ID for the given OTP request. This ID is returned in the SendOtpResponse from sendOtp().

otpCode
string
required

The OTP Code sent to the user.

targetPublicKey
string
required

The public key of the target user.

sessionLengthSeconds
number

Specify the length of the session in seconds. Defaults to 900 seconds or 15 minutes.

oauth()

Complete an OAuth authentication flow once the OIDC Token has been obtained from the OAuth provider.

import { server } from "@turnkey/sdk-server";

const oauthSession = await server.oauth({
  suborgID: suborgId!,
  oidcToken: credential,
  targetPublicKey: authIframeClient?.iframePublicKey!,
  sessionLengthSeconds: authConfig.sessionLengthSeconds,
});

if (oauthSession && oauthSession.token) {
  // log in with Session
  await authIframeClient!.loginWithSession(oauthSession);
  // call onAuthSuccess callback
  await onAuthSuccess();
} else {
  // error handling
}

Parameters

request
OauthRequest
required

An object containing the parameters to complete an OAuth authentication flow.

suborgID
string
required

The ID of the sub organization for the given request.

oidcToken
string
required

The OIDC (OpenID Connect) Token issued by the OAuth provider which contains basic profile information about the user.

targetPublicKey
string
required

The public key of the target user.

sessionLengthSeconds
number

Specify the length of the session in seconds. Defaults to 900 seconds or 15 minutes.

sendCredential()

Send a login credential to a user’s email address.

import { server } from "@turnkey/sdk-server";

const sendCredentialResponse = await server.sendCredential({
  email,
  targetPublicKey: authIframeClient?.iframePublicKey!,
  organizationId: suborgId!,
  ...(apiKeyName && { apiKeyName }),
  ...(sendFromEmailAddress && { sendFromEmailAddress }),
  ...(sessionLengthSeconds && { sessionLengthSeconds }),
  ...(invalidateExisting && { invalidateExisting }),
  ...(emailCustomization && { emailCustomization }),
  ...(sendFromEmailAddress && { sendFromEmailAddress }),
});

Parameters

request
InitEmailAuthRequest
required

An object containing the parameters to send a login credential via email.

email
string
required

The email address provided by the user.

targetPublicKey
string
required

The public key of the target user.

organizationId
string
required

The ID of the sub organization for the given request.

apiKeyName
string

The name of the API Key.

userIdentifier
string

IP Address, iframePublicKey, or other unique identifier used for rate limiting.

sessionLengthSeconds
number

Specify the length of the session in seconds. Defaults to 900 seconds or 15 minutes.

invalidateExisting
boolean

Invalidate all pre-existing sessions. Defaults to false.

emailCustomization
EmailCustomization

An option to customize the email.

sendFromEmailAddress
string

Provide a custom email address which will be used as the sender of the email.